1 files changed, 24 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/countof-stdcountof.c b/gcc/testsuite/gcc.dg/countof-stdcountof.c
new file mode 100644
index 0000000..2fb0c63
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/countof-stdcountof.c
@@ -0,0 +1,24 @@
+/* { dg-do run } */
+/* { dg-options "-std=c2y -pedantic-errors" } */
+
+#include <stdcountof.h>
+
+#define assert(e)  ((e) ? (void) 0 : __builtin_abort ())
+
+extern int strcmp (const char *, const char *);
+
+#ifndef countof
+#error "countof not defined"
+#endif
+
+int a[3];
+int b[countof a];
+
+#define str(x) #x
+#define xstr(x) str(x)
+
+int
+main (void)
+{
+  assert (strcmp (xstr(countof), "_Countof") == 0);
+}